TippingPoint Zero Day Initiative

Microsoft Internet Explorer CFunctionPointer Memory Corruption Vulnerability

ZDI-09-011: February 10th, 2009


Affected Vendors

Affected Products

TippingPoint™ IPS Customer Protection

TippingPoint IPS customers are protected against this vulnerability by Digital Vaccine protection filter ID 6753. For further product information on the TippingPoint IPS:

Vulnerability Details

This vulnerability allows remote attackers to execute arbitrary code on vulnerable installations of Microsoft Internet Explorer. User interaction is required to exploit this vulnerability in that the target must visit a malicious page.

The specific flaw exists in the handling of document objects. When an object is appended and deleted in a specific order memory corruption occurs. Successful exploitation leads to remote compromise of the affected system under the credentials of the currently logged in user.

Vendor Response

Microsoft has issued an update to correct this vulnerability. More details can be found at:

Disclosure Timeline

    2008-09-23 - Vulnerability reported to vendor
    2009-02-10 - Coordinated public release of advisory


This vulnerability was discovered by: